What is this tune?

Hey,
Theres a tune out right now its quite mainstream but cant remember who does it or how it goes really lol all i know is it goes into this sort of african beat with a african man who says 'im a bad man listen when i say im a bad man' then somethng like 'ill take it back to old school take it back to home'. Really vague i know but if someone could help me out?